Over 3 years ago, Elon Musk released a white paper describing the possibilities of a new mode of transportation. The SpaceX and Tesla founder's proposal for "Hyperloop" launched a race to make this futuristic-sounding transit system a reality.

Now a heated competition has developed between companies vying to be the first to send people zooming through tubes.

Here to give us an update on the state of Hyperloop is Sarah Buhr, a writer with TechCrunch who’s been following the story.

Guest:

Sarah Buhr, reporter for TechCrunch; she’s been following the story; she tweets @sarahbuhr